: to pull (something) behind you especially on the ground
: to be pulled behind someone or something
: to walk or move slowly as you follow behind (someone or something)
: a path through a forest, field, etc.
: the marks, signs, smells, etc., that are left behind by someone or something and that can often be followed
: a route that someone follows to go somewhere or achieve something
What made you want to look up trail? Please tell us where you read or heard it (including the quote, if possible).